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authorYu Watanabe <watanabe.yu+github@gmail.com>2019-07-16 19:47:20 +0200
committerYu Watanabe <watanabe.yu+github@gmail.com>2019-07-18 18:49:39 +0200
commita24e12f0209b075e2db80cc3adac1c5afb17031e (patch)
tree9c6eba324e1ebd3bcb631d43761e0ed340b2b899
parentnetwork: set routes to dns servers provided by DHCPv4 (diff)
downloadsystemd-a24e12f0209b075e2db80cc3adac1c5afb17031e.tar.xz
systemd-a24e12f0209b075e2db80cc3adac1c5afb17031e.zip
network: add DHCPv4.RoutesToDNS= setting
Diffstat (limited to '')
-rw-r--r--man/systemd.network.xml8
-rw-r--r--src/network/networkd-dhcp4.c6
-rw-r--r--src/network/networkd-network-gperf.gperf1
-rw-r--r--src/network/networkd-network.h1
-rw-r--r--test/fuzz/fuzz-network-parser/directives.network1
5 files changed, 15 insertions, 2 deletions
diff --git a/man/systemd.network.xml b/man/systemd.network.xml
index cd1aa73f46..041bafc773 100644
--- a/man/systemd.network.xml
+++ b/man/systemd.network.xml
@@ -1323,6 +1323,14 @@
</listitem>
</varlistentry>
<varlistentry>
+ <term><varname>RoutesToDNS=</varname></term>
+ <listitem>
+ <para>When true, the routes to the DNS servers received from the DHCP server will be
+ configured. When <varname>UseDNS=</varname> is disabled, this setting is ignored.
+ Defaults to <literal>false</literal></para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
<term><varname>UseNTP=</varname></term>
<listitem>
<para>When true (the default), the NTP servers received
diff --git a/src/network/networkd-dhcp4.c b/src/network/networkd-dhcp4.c
index e5ea6b702e..f20254fc82 100644
--- a/src/network/networkd-dhcp4.c
+++ b/src/network/networkd-dhcp4.c
@@ -118,7 +118,8 @@ static int link_set_dns_routes(Link *link, const struct in_addr *address) {
assert(link->dhcp_lease);
assert(link->network);
- if (!link->network->dhcp_use_dns)
+ if (!link->network->dhcp_use_dns ||
+ !link->network->dhcp_routes_to_dns)
return 0;
n = sd_dhcp_lease_get_dns(link->dhcp_lease, &dns);
@@ -408,7 +409,8 @@ static int dhcp_remove_dns_routes(Link *link, sd_dhcp_lease *lease, const struct
assert(lease);
assert(link->network);
- if (!link->network->dhcp_use_dns)
+ if (!link->network->dhcp_use_dns ||
+ !link->network->dhcp_routes_to_dns)
return 0;
n = sd_dhcp_lease_get_dns(lease, &dns);
diff --git a/src/network/networkd-network-gperf.gperf b/src/network/networkd-network-gperf.gperf
index 3501ffdd10..f5f837ad63 100644
--- a/src/network/networkd-network-gperf.gperf
+++ b/src/network/networkd-network-gperf.gperf
@@ -142,6 +142,7 @@ Route.FastOpenNoCookie, config_parse_fast_open_no_cookie,
Route.TTLPropagate, config_parse_route_ttl_propagate, 0, 0
DHCPv4.ClientIdentifier, config_parse_dhcp_client_identifier, 0, offsetof(Network, dhcp_client_identifier)
DHCPv4.UseDNS, config_parse_bool, 0, offsetof(Network, dhcp_use_dns)
+DHCPv4.RoutesToDNS, config_parse_bool, 0, offsetof(Network, dhcp_routes_to_dns)
DHCPv4.UseNTP, config_parse_bool, 0, offsetof(Network, dhcp_use_ntp)
DHCPv4.UseMTU, config_parse_bool, 0, offsetof(Network, dhcp_use_mtu)
DHCPv4.UseHostname, config_parse_bool, 0, offsetof(Network, dhcp_use_hostname)
diff --git a/src/network/networkd-network.h b/src/network/networkd-network.h
index 82fad492a8..0fa800841c 100644
--- a/src/network/networkd-network.h
+++ b/src/network/networkd-network.h
@@ -91,6 +91,7 @@ struct Network {
bool dhcp_broadcast;
int dhcp_critical;
bool dhcp_use_dns;
+ bool dhcp_routes_to_dns;
bool dhcp_use_ntp;
bool dhcp_use_mtu;
bool dhcp_use_routes;
diff --git a/test/fuzz/fuzz-network-parser/directives.network b/test/fuzz/fuzz-network-parser/directives.network
index 69a4281542..c3af95db0d 100644
--- a/test/fuzz/fuzz-network-parser/directives.network
+++ b/test/fuzz/fuzz-network-parser/directives.network
@@ -69,6 +69,7 @@ SendRelease=
MaxAttempts=
[DHCPv4]
UseDNS=
+RoutesToDNS=
UseDomains=
UseRoutes=
IAID=